Self-Adaptation in Evolving Systems

Details Self-Adaptation in Evolving Systems Self-Adaptation in Evolving Systems

1997-08-06

arxiv.org/abs/adap-org/9708002v1

Nonlinear Sciences

Adaptation and Self-Organizing Systems

LaTeX source, 16 p., please email hwael or stephens for figures

Scientific paper

A theoretical and experimental analysis is made of the effects of self-adaptation in a simple evolving system. Specifically, we consider the effects of coding the mutation and crossover probabilities of a genetic algorithm evolving in certain model fitness landscapes. The resultant genotype-phenotype mapping is degenerate, there being no direct selective advantage for one probability versus another. We show that the action of mutation and crossover breaks this degeneracy leading to an induced symmetry breaking among the genotypic synonyms. We demonstrate that this induced symmetry breaking allows the system to self-adapt in a time dependent environment.

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